Marc O Merbaum, MD - Medicare Internal Medicine in Saint Louis, MO

Marc O Merbaum, MD is a medicare enrolled "Internal Medicine" physician in Saint Louis, Missouri. He went to University Of Missouri, Columbia School Of Medicine and graduated in 1995 and has 29 years of diverse experience with area of expertise as Internal Medicine. He is a member of the group practice American Multispecialty Group Inc and his current practice location is 5034 Griffin Rd, Saint Louis, Missouri. You can reach out to his office (for appointments etc.) via phone at (314) 843-7333.

Marc O Merbaum is licensed to practice in Missouri (license number 116179) and he also participates in the medicare program. He accepts medicare assignments (which means he accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance) and his NPI Number is 1245204338.

Contact Information

Marc O Merbaum, MD
5034 Griffin Rd,
Saint Louis, MO 63128-3418
(314) 843-7333
(314) 843-9946

Map and Direction




Physician's Profile

Full NameMarc O Merbaum
GenderMale
SpecialityInternal Medicine
Experience29 Years
Location5034 Griffin Rd, Saint Louis, Missouri
Accepts Medicare AssignmentsYes. He accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance.
  Medical Education and Training:
  • Marc O Merbaum attended and graduated from University Of Missouri, Columbia School Of Medicine in 1995
  NPI Data:
  • NPI Number: 1245204338
  • Provider Enumeration Date: 02/15/2006
  • Last Update Date: 02/13/2017
  Medicare PECOS Information:
  • PECOS PAC ID: 4688646532
  • Enrollment ID: I20040811000065

Medical Identifiers

Medical identifiers for Marc O Merbaum such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1245204338NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207R00000XInternal Medicine 116179 (Missouri)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Mercy Hospital SouthSaint louis, MOHospital
Mercy Hospital St LouisSaint louis, MOHospital
Ssm St Clare Health CenterFenton, MOHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
American Multispecialty Group Inc1658365572146

Medicare Reassignments

Some practitioners may not bill the customers directly but medicare billing happens through clinics / group practice / hospitals where the provider works. Medicare reassignment of benefits is a mechanism by which practitioners allow third parties to bill and receive payment for medicare services performed by them. Marc O Merbaum allows following entities to bill medicare on his behalf.
Entity NameAmerican Multispecialty Group Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1972559532
PECOS PAC ID: 1658365572
Enrollment ID: O20040413001412

Medicare Part D Prescriber Enrollment

Any physician or other eligible professional who prescribes Part D drugs must either enroll in the Medicare program or opt out in order to prescribe drugs to their patients with Part D prescription drug benefit plans. Marc O Merbaum is enrolled with medicare and thus, if eligible, can prescribe medicare part D drugs to patients with medicare part D benefits.

Mailing Address and Practice Location

Mailing AddressPractice Location Address
Marc O Merbaum, MD
Po Box 23340,
Saint Louis, MO 63156-3340

Ph: (314) 843-7333
Marc O Merbaum, MD
5034 Griffin Rd,
Saint Louis, MO 63128-3418

Ph: (314) 843-7333

Reviews and Comments


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Medicare Program: Medicare is a federal government program which provides health insurance to people who are 65 or older. This program also covers certain younger people with disabilities (who receive Social Security Disability Insurance - SSDI), and people with End-Stage Renal Disease (permanent kidney failure requiring dialysis or a transplant, sometimes called ESRD.

Medicare Assignment: Assignment means that your doctor, provider, or supplier agrees (or is required by law) to accept the Medicare-approved amount as full payment for covered services. Most doctors, providers, and suppliers accept assignment, but you should always check to make sure. Participating providers have signed an agreement to accept assignment for all Medicare-covered services.

NPI Number: The National Provider Identifier (NPI) is a unique identification number for covered health care providers. The NPI must be used in lieu of legacy provider identifiers in the HIPAA standards transactions. Covered health care providers and all health plans and health care clearinghouses must use the NPIs in the administrative and financial transactions adopted under HIPAA (Health Insurance Portability and Accountability Act).

Our Data: Information on www.medicarelist.com is built using data sources published by Centers for Medicare & Medicaid Services (CMS) under Freedom of Information Act (FOIA). The information disclosed on the NPI Registry are FOIA-disclosable and are required to be disclosed under the FOIA and the eFOIA amendments to the FOIA. There is no way to 'opt out' or 'suppress' the NPPES record data for health care providers with active NPIs.